Rotary power device



E. H. GOLLINGS.

ROTARY POWER DEVICE.

APPLICATION FILED APR.22. 1918.

1,341,846. Patented June 1, 1920.

J .90 2 SHEETS-SHEET 1. i- 1 E. H. GOLLINGS.

ROTARY POWER DEVICE.

umcmouhuo APR- 22. um.

Patented June 1, 1920.

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" to the. numerals of certain new and useful 1m UNIT-ED lsrArss rArEnr cr mes.

EIiIJGK H. GOLLINGS, OF CHICAGO, ILLIN OIS.

- no'rnmr r'owEn. DEVICE.

To whom it camera! Be it known that I, Emox H. Gonmncs,

a citizen of the United-States, and a resident" of'the city of Chica 0, inthe county of Cook and State of I ois, have invented rovements 1n Rotary Power Devices; and do hereby declare that. the following is a full, clear, and

exact description of the same,'refer'ence being had to the accompanying drawings and reference marked thereon which. forms. part of this specification.

My invention has reference more particu- .larly to a device comprising mner and outer rotary members which cooperate to provide gradually expanding chambers at one side of the device which after maximum expantracting expansible' chambers,

. mit discharge sion, transfer the contents to gradually conchambers at the opposite side of the device, and enable the device to operate as a pump by applying power tothe rotary members or to be used as a motor by introducing a fluid under pressure into the and my invention has referenceto'a device similar ,to that shown anddescribed in my application filed J anuary 15th, 1917, Serial No. 142,381. I

The object of my invention is to provlde a rotary pump or motor comprising inner and outer'rotary members having pressure chambers or pockets therebetween and a central valve element for affording communication with the chambers 0r pockets and regulating the supply and discharge of fluid thereto and therefrom.

Another object of my mvention is to provide a pump or motor compr1sing inner and outer rotary members having pressure chambers or pockets therebetween whlch are adapted to gradually expand and transfer fluid to other gradually contracting compartments, and a central valve member with an inlet and an outlet, the former of which is adapted to completely fill the chambers or pockets to the maximum capacity, and the latter of which is adapted to perfrom the chambers or pockets as the capaclty thereof is diminished.

Another object of my invention is to pro? .vide a pump or motor comprising inner and outer rotary members wlth interengag ng teeth or projections having flat engagmg surfaces for driving engagement of one member with the other.

Another object of my invention is to provide a pump or motor comprising mner and Specification of Letters Patent.

Patented June 1, 1920..

Application filed April 22, 1918. Serial No. 230,094.

outer rotary members having-graduall expandlng and contracting pockets or c am bers therebetween, and a cylindrical drum' around which the members rotate which has a transverse .part tlon intermediate'of the ends forming an inlet compartment at one end and an outlet compartment at the other end, the former of which communicates with the chambers or compartments as they are expanded and the latter of which communicates with the chambers or pockets as they are contracted.

Another object of my invention isto proylde a rotary pump or motor comprising an internally toothed rotary member and an externally toothed rotary member therein,

having detachable teeth whereby the indi-.

vidual teeth may be removed and replaced.

My invention also has other important objects which will appear from the following specification and the accompanying drawings, in which I have described andlllustrated my invention in a preferred .tional view of central'portions of the device taken on the line 55 of Fig. 1.

Fig. 6 is an enlarged sectional view on the line 6-6 of Fig. 1.

As'shown on the drawings:

The reference numeral 1 indicates a base for supporting the device which has the spaoed standards 2, each of which has. a

clamp bearing 3 at the upper end having a cylindrical opening therethrough.

or cylinder 4, with the hollow shafts 5 and ,6 secured eccentrically, to the end walls thereof so that said shafts are in alinement and the axes thereof are at one side of the axis of the cylinder or drum 4. The shafts 5 and 6 may be secured to the cylinder 4 by means of the threaded connection as shown, or in any other suitable manner which will provide a tight joint and a rigid construction andleave the end surfaces of the cyl- Inter mediate of the standards 2, is a hollow drum of the hollow shafts and 6 are engaged in the cylindrical bearings in the clamps 3,

walls 9.

which latter are clamped tight thereagainst by means of the bolts 7, so as to hold the structure consistin of the drum 4 and the hollow shafts 5 and 6 stationary.

A wheel 8 is mounted to turn on the drum 4 and comprises a pair of spaced side walls 9, having corresponding radial teeth or pro- 'ections 10, with transverse walls 11, extend- 7 ing therebetween and connecting the side The lateral edges of the teeth 10 are parallel as shown and the outer ends thereof curved, and the wall 11, is flush with and extends between the outer curved edges of the teeth, thence inwardly flush with and connecting the parallel edges at one side of the corresponding teeth at opposite sides of the wheel and then inwardly and an larl as shown in F i 4 and joins with t e hu 12, which exten s between the side walls of the wheel, thereby forming a series of pockets or compartments around the wheel between the teeth, and there is an opening or slot 13, centrally arranged in the hub 12, at the bottom of each compartment.

The drum 4 is hollow as previously stated and has diametrically opposite slots 14, the ends of which are separated by an intermediate portion 15,- of the outer wall of the cylinder and there is a partition 16 extending transversely across the interior of the drum and offset as shown in Fig. 6 so as to formoverlapping compartments 17 and 18, each having a slot 14 communicating therewith. The slots 14 are of substantially the same width as theslots 13, in the hub of the wheel 8, and are adapted to have said slots 13, register therewith as the wheel 8 is rotated, and the intermediate diametrically opposite portions 15 of the cylinder wall between the slots 14, are of suitable dimensions to cover and close one slot 13 only at a time as the wheel 8 is rotated. The cylinder or drum 4 serves as a valve to control communication with the pockets between the walls 11 of the wheel 8 as said wheel is rotated and the hollow shaft 5, communicates with the compartment 18 and the other hollow shaft 6 communicates with the compartment 17.

Mounted upon the inner ends of the shafts 5 and 6 to rotate thereon is a casing 30, com-.

prising a drum 20 and end plates 21 bolted thereto and each of said end plates has a hub 22, one of which is journaled on the shaft 5, and the other of which is on the shaft 6. The plates 21 and drum 20-are secured together'by means of the bolts 23 and are carefully spaced and constructed so as to clamp the drum 4 and wheel ,8 therebetween so that the surfaces thereof engage sufficiently close to avoid leakage therebetween and at the same time permit differential rotation of the casing 30 and wheel 8 on the drum 4. The hubs 22 are provided with oil holes 24, to admit lubricant to themoviug surfaces and the outer end of each hub is threaded and has a cap 25 threaded thereon, and packing material 26 compressed therebetween to form a fluid tight joint between the hub and hollow shaft. Secured against the inner face of the drum 20 are a plurality of teeth 27 which extend between the side walls of the casing, and are preferably made of rubber or fiber or similar material which will yield somewhat to the pres sure of the wheel 8 thereagainst and are also preferably made in sections each of which comprises a tooth which is held in place by means of a bolt 28, passed therethrough and through the side walls 21 of the drum so as to hold the base of the tooth against the inner wall of the drum 20. The axes of the rotary members 8 and 21 are spaced apart so that the teeth or projections of the wheel '8 mesh with the teeth 27v at one side of the device and so that the tips of the teeth on the wheel 8 directly opposite therefrom will have a sliding engagement with the tips of the teeth 27 of the drum, this being effected because of the difference in diameters and eccentric relation of the rotary parts and because the wheel -8 is provided with one less tooth than the drum 21. This construction divides the device substantially on a plane passing through the axes of both rotary members into a plurality of compartments at one side of such plane which gradually expand as the device is operatedand after reaching the maximum capacity, transfer the contents thereofto compartments at the opposite side of such plane, which com partments are gradually contracted as the device operates, and the arrangement of the drum 4 and slots 14 therein is such that the chamber 18, is in constant communication through the slots 13 with the compartments of increasing capacity whereas the chamber 17, is in constant communication with the compartments of decreasing capacity.

The drum 20 is provided with gear teeth 29 on the periphery for driving the device when used as a pump or for communicating power therefrom when the device is used as a motor.

The operation is as follows:

When used as a pump, power is applied heretofore constructed the engaging surfaces of the teeth have been made curved so that the teeth roll one against another and engage on a single line, which occasions considerable wear and is not effective to prevent leakage between the intake and outlet sides of the device. With my construction however the. sides of the teeth are flat surfaces which come flat together as the device is operated and provide because of such construction and the resiliency of the teeth 27 an engagement which not only avoids excessive wear, but insures a tight joint which are thereby disengaged. The plate 15 at the rupted by the tion of the drum 21'opens communication compartment formed therebetween will prevent leakage therethrough, and the resilient material of which the teeth 27 are made enables the surfaces of the teeth to remain in close contact during the time of their co-action and until the succeeding teeth are brought into engagement and they bottom of the drum 4 prevents communication from one side of the pump to the other at the bottom of the devicebut' after the compartment'between the teeth of the wheel 8 is moved so that communication thereto from the opposite side of the motor is intersucceeding tooth, the slot 13 thereof moves past the lower plate 15 and afi'ords communication with the chamber 18 in the drum 4, and remains in communicationtherewith during the entire time that the chamber between the teeth is being enlarged until it reaches the position of greatest capacity. The increasing size of the pockets between the .wheel 8 and the drum 21 creates a suction which draws the fluid therein and as the compartment reaches the upper position the tips of theadjoining teeth engage the tips of adjoining teeth 27 at the top of the drum 21 and separate the from the between the teeth at the intake side of and the plate 15., at the top of the drum 4, is arranged to close communication with the slot 13. at such time so as to prevent space the pump,

communication between the intake and the discharge sides of pump. The further rotabetween this chamber and the discharge side of the pump and further rotation causes a gradual insertion of the teeth which gradually decreases the size of the pockets at the discharge side of the pump and forces the fluid out through the slot 14 into the chamber 17 and out through the pipe 6.

Obviously this device may be used as a motor by applying fluid under pressure which reverses the operation of the parts.

While I have shown and described my inteeth on the said member to provide a plurality of gradually expansible compartments at one side of the device and a plurality of gradually contractible outlet compartments on the opposite side of the device between the rotor and rotary member for effecting a transfer of fluid through the device, the said 'teeth on the rotor being hollowed and'provided with a transverse wall adjacent one face thereof and the outer end of the teeth, for providing an enlarged fluid compartment intermediate of the teeth.

. 2. In a device of the class described the combination .of a hollow rotary member having inwardly projecting1 resilient teeth, a rotor mounted eccentrica y therein and having outwardly extending teeth adapted to engage the resilient teeth of the rotary member, said teeth on both'of said members being provided with flat faces adapted to interengage for imparting rotary movement from oneof the members to the other.

In testimony whereof I have hereunto sub-- scribed my name .inthe presence of two subscribing witnesses.

v ELLIOK H. GOLLINGS. Witnesses:

FRANK A. BREMER, Jr., FRED E. Pmsmn. 

